A comprehensive, exam-aligned study guide for the PE Mechanical Engineering Mechanical Systems & Materials (MSM) depth module. Covers machine design, strength of materials, failure theories, shafts, bearings, gears, springs, fasteners, pressure vessels, materials engineering, and manufacturing processes. Includes three full-length 40-question practice exams with step-by-step solutions, topic-based practice sets, formula sheets, material property tables, calculator shortcuts for the TI-36X Pro, and NCEES handbook mapping. Designed for PE candidates preparing for the NCEES CBT Professional Engineer License Exam.